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James Almer c8197f73e6 avcodec/mjpegdec: postpone calling ff_get_buffer() until the SOS marker 
With JPEG-LS PAL8 samples, the JPEG-LS extension parameters signaled with
the LSE marker show up after SOF but before SOS. For those, the pixel format
chosen by get_format() in SOF is GRAY8, and then replaced by PAL8 in LSE.
This has not been an issue given both pixel formats allocate the second data
plane for the palette, but after the upcoming soname bump, GRAY8 will no longer
do that. This will result in segfauls when ff_jpegls_decode_lse() attempts to
write the palette on a buffer originally allocated as a GRAY8 one.

Work around this by calling ff_get_buffer() after the actual pixel format is
known.

Signed-off-by: James Almer <jamrial@gmail.com>
2021-04-25 10:57:29 -03:00
compat atomics: Fix the win32 atomic_exchange function 2021-04-04 11:06:08 +03:00
doc doc/transforms: add documentation for the FFT transforms 2021-04-24 17:19:17 +02:00
ffbuild ffbuild/common: Make deletion of templates possible 2021-02-07 09:45:04 +01:00
fftools fftools/ffprobe: Remove check on show_frames and show_packets in XML writer 2021-04-16 08:40:09 +02:00
libavcodec avcodec/mjpegdec: postpone calling ff_get_buffer() until the SOS marker 2021-04-25 10:57:29 -03:00
libavdevice libavdevice/gdigrab: fix capture of windows with non-ASCII titles 2021-04-13 19:34:33 +03:00
libavfilter avfilter/af_adelay: make per channel delay argument an int64_t 2021-04-25 09:22:09 -03:00
libavformat avformat/asfdec_o: Use ff_get_extradata() 2021-04-24 11:36:47 +02:00
libavresample
libavutil x86/tx_float: fix forgotten 2-argument mulps 2021-04-24 22:33:42 +02:00
libpostproc Bump minor versions after release branch 2021-03-20 01:02:11 +01:00
libswresample Include attributes.h directly 2021-04-19 14:34:10 +02:00
libswscale Include attributes.h directly 2021-04-19 14:34:10 +02:00
presets
tests fate: add tests for JPEG-LS PAL8 2021-04-24 12:32:06 -03:00
tools tools/target_dec_fuzzer: Adjust threshold for paf video 2021-04-22 15:06:55 +02:00
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.mailmap mailmap: add entry for myself 2021-03-09 02:09:55 +00:00
.travis.yml
Changelog Changelog: Add new <next> line after 4.4 2021-04-09 06:30:31 +02:00
configure lavfi: add filter dnn_detect for object detection 2021-04-17 17:27:02 +08:00
CONTRIBUTING.md
COPYING.GPLv2
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INSTALL.md
LICENSE.md
MAINTAINERS MAINTAINERS: add myself as adpcm maintainer 2021-03-25 12:51:10 +10:00
Makefile avcodec: move core AVCodecContext functions from util.c to a new file 2021-03-19 15:35:35 -03:00
README.md
RELEASE Bump Versions before release/4.4 branch 2021-03-20 01:01:12 +01:00

README.md

FFmpeg README

FFmpeg is a collection of libraries and tools to process multimedia content such as audio, video, subtitles and related metadata.

Libraries

  • libavcodec provides implementation of a wider range of codecs.
  • libavformat implements streaming protocols, container formats and basic I/O access.
  • libavutil includes hashers, decompressors and miscellaneous utility functions.
  • libavfilter provides a mean to alter decoded Audio and Video through chain of filters.
  • libavdevice provides an abstraction to access capture and playback devices.
  • libswresample implements audio mixing and resampling routines.
  • libswscale implements color conversion and scaling routines.

Tools

  • ffmpeg is a command line toolbox to manipulate, convert and stream multimedia content.
  • ffplay is a minimalistic multimedia player.
  • ffprobe is a simple analysis tool to inspect multimedia content.
  • Additional small tools such as aviocat, ismindex and qt-faststart.

Documentation

The offline documentation is available in the doc/ directory.

The online documentation is available in the main website and in the wiki.

Examples

Coding examples are available in the doc/examples directory.

License

FFmpeg codebase is mainly LGPL-licensed with optional components licensed under GPL. Please refer to the LICENSE file for detailed information.

Contributing

Patches should be submitted to the ffmpeg-devel mailing list using git format-patch or git send-email. Github pull requests should be avoided because they are not part of our review process and will be ignored.